Child-resistant screw-on cap



FIG. 1 is a top perspective view of a child-resistant screw-on cap showing my new design;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a front elevational view thereof; and,

FIG. 6 is a side elevational view thereof. 

The ornamental design for a child-resistant screw-on cap, as shown and described. 